This exploratory and practical case study examines one country’s white papers on disability policies whilst drawing upon experiences of an international technical cooperation project. The creation process, contents, and functions of white papers on disability in Mongolia are analysed descriptively using document data and the author’s field notes. This case study on the practice which can be considered macro social work reveals that the creation of the Mongolian white papers was a constructive and dynamic process, participated in by both domestic and international actors. It was found that white papers have multiple functions, such as sharing fundamental information to promote the participation of disabled people and to monitor disability-inclusive policies. This article evinces how white papers on disability can be a foundation of knowledge and information on disability-inclusive policies and development for various stakeholders.